Constraining flavour patterns of scalar leptoquarks in the effective field theory

被引：29

作者：

Bordone, Marzia ^{[1
,2
,3
]}

Cata, Oscar ^{[1
]}

Feldmann, Thorsten ^{[1
]}

Mandal, Rusa ^{[1
]}

机构：

[1] Univ Siegen, Theoret Phys 1, Nat Wissensch Tech Fak, Walter Flex Str 3, D-57068 Siegen, Germany

[2] Univ Torino, Dipartimento Fis, I-10125 Turin, Italy

[3] INFN, Sez Torino, I-10125 Turin, Italy

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2021年 / 2021卷 / 03期

关键词：

Beyond Standard Model; Effective Field Theories; ANOMALOUS MAGNETIC-MOMENT; WILSON COEFFICIENTS; PHYSICS; DECAYS; LEPTONS; HIGGS; MUON;

D O I：

10.1007/JHEP03(2021)122

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We investigate the viability of extending the Standard Model with S-1 and S-3 scalar leptoquarks when the flavour structure is parametrized in terms of Froggatt-Nielsen charges. In contrast to a similar analysis with a vector leptoquark, we find essentially two solutions for the charges that fit the experimental constraints, which are dominated by the current tensions in B decays. These two scenarios differ in their estimate of the anomalous magnetic moment of the muon, (g - 2), but they both predict sizeable contributions to tau -> mu gamma, (B) over bar (s)-> tau(+/-)mu(-/+) and B+-> K+tau(+)mu(-) decays, whose branching ratios are close to the current experimental limits.

引用

页数：46

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